Stop Signs (R1-1)

MUTCD-compliant stop signs from StopSigns.com are manufactured using either ACM (Aluminum Composite Material) panels or solid 0.080 gauge aluminum to provide long-lasting durability and professional traffic control performance.

ACM stop sign panels are constructed with a low-density polyethylene (LDPE) core permanently bonded between two sheets of aluminum. The aluminum faces are coated with a high-performance polyester finish designed to resist corrosion, fading, and harsh outdoor weather conditions. This advanced composite construction produces traffic signs that are lightweight yet extremely rigid and durable.

ACM panels are widely used throughout the traffic safety industry because they provide a modern alternative to solid aluminum signs while maintaining a similar appearance and strength. In everyday applications, ACM stop signs are virtually indistinguishable from traditional aluminum signs while offering excellent weather resistance and structural stability.

Our 18", 24", and 30" stop signs are produced using 3 mm ACM panels, while the larger 36" stop signs are manufactured using thicker 4 mm ACM panels for added stiffness and improved wind resistance in high-exposure environments.

All StopSigns.com products are designed to meet MUTCD (Manual on Uniform Traffic Control Devices) standards for roadway signage when specified with approved reflective materials. Our signs utilize 3M High Intensity Prismatic (HIP) reflective sheeting that meets ASTM D4956 Type III and Type IV specifications, delivering excellent nighttime visibility and long-distance reflectivity.

This premium reflective material is engineered for long-term outdoor performance and includes a 10-year manufacturer warranty, ensuring your stop signs remain bright, visible, and compliant for years to come.

Stop Sign Features & Specifications

• High Intensity Prismatic (HIP) reflective sheeting provides excellent visibility in both daytime and nighttime conditions
• Available in Aluminum Composite Material (ACM) or 0.080" solid aluminum
• ACM thickness by size: 18", 24", and 30" signs use durable 3mm panels; 36" signs use thicker 4mm panels for additional stiffness
• Pre-punched 3/8" mounting holes allow for fast, convenient installation on standard sign posts
• MUTCD compliant when specified with approved reflective sheeting
• ASTM D4956 Type III & IV compliant reflective material for dependable long-term outdoor performance
• Made in the USA

Why it matters:

These reflective stop signs are designed for durability, visibility, and compliance, making them a strong choice for parking lots, private roads, commercial properties, municipalities, schools, and other traffic control applications.